The Republican civil war has claimed its biggest casualty yet. The revolution that toppled John Boehner was carried out by a group of intransigent conservatives who had made the speaker of the House's job hell ever since the Tea Party wave of 2010 elevated him to power. It is only in recent months that this disruptive force in American politics even has a name: the House Freedom Caucus. America should brace for chaos — with Republican infighting jeopardizing not only the nation's credit, but funding for our roads and bridges, our veterans and the most vulnerable among us. This tiny band of radicals — who have built careers on hatred of government — won't be deterred until they've shaken the very foundation of the people's House.